[The following information applies to the questions displayed below.) Travis Metals heats copper ingots to a high temperature by placing them in a large oven. The heated ingots are then run through a shaping machine that forms them into wire. Due to the length of time it takes the oven to heat up, it is never turned off. When the ingots are placed in the oven the temperature is raised to a higher level. Once they are done being heated the oven temperature is turned back down until a new batch of ingots is ready to be heated. The following information shows the ingots processed and the power costs over the past 10 months. Month January February March April May Ingots Power Cost 126 $6,140 106 $5,140 96 $5,040 116 $5,640 146 96,640 136 $6,240 86 $4,640 76 $3,840 66 $4,040 56 $3,040 June July August September October Required: 2. Using the high-low method, estimate a cost formula for power costs. Express the formula in the form Y = a + bx. Answer is complete but not entirely correct. $ 6,140 $ 6,140